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TRC521 CB Radio
SM
www.radioshack.com
OWNER’S MANUAL —
21-1711
Please read before using this equipment.
SQUELCH — Rotate to reduce
OFF/VOLUME — Rotate towards
RF GAIN — Rotate to
background noise (CB sensitivity).
VOLUME to turn on your CB, and then
improve signal reception in
See Page 6.
adjust to desired listening level. Rotate
strong signal areas. See
towards OFF to turn off your CB.
Page 6.
CB/WX — Slide to CB to
use and listen to citizen’s
CHANNEL — Rotate to
band radio. Slide t
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CONTENTS CB RADIO SETUP CB Radio Setup ......................... 2 Your CB’s display is protected during shipment by a piece of Attach the Microphone Holder 2 clear film. Carefully peel off this film before using your radio. Mount the CB .......................... 2 Connect the Microphone ......... 3 Connecting an Antenna .......... 3 ATTACH THE MICROPHONE HOLDER Connecting to Vehicle You can attach the microphone holder horizontally or Battery Power ......................... 4 vertically to
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2. At the marked positions, drill a hole slightly smaller than the mounting screws. Do not drill into objects behind the mounting surface. 3. Secure the mounting bracket to the mounting surface with the supplied screws and lockwashers. Mounting Bracket Screws and Lockwashers Mounting Knobs Rubber Washers 4. Attach the CB to the mounting bracket with the supplied rubber washers and mounting knobs. Microphone Jack CONNECT THE MICROPHONE 1. Align the holes inside the microphone’s plug with
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Dual band antennas provide optimum reception of CB and WX channels. For mobile installations (car, boat), a non- directional antenna provides the best CB reception. Mobile antennas use your vehicle’s metal body as a ground plane. If the CB is installed in a boat, your boat’s steel hull is used as a ground plane. Without a steel hull serving as a ground plane, you will not receive maximum efficiency. Before using your CB in a boat, consult with your boat dealer regarding an adequate ground
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USING THE CB AS A BASE STATION CAUTION Although this CB is designed for mobile use, you can use it Most 12-volt DC power supplies as a base station with an AC power source. Your local plug into a standard AC outlet to RadioShack store carries a wide selection of base station produce DC power. Before antennas, coaxial antenna cable, connectors, and base connecting your CB to a 12-volt DC station power supplies. For base station installation, you power supply, read and follow the need
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RECEIVING AND TRANSMITTING We recommend you try receiving transmissions before you transmit. RECEIVING 1. Rotate OFF/VOLUME towards OFF until it clicks to turn off the CB. 2. Slide CB/WX to CB. 3. Rotate SQUELCH fully counterclockwise. 4. Rotate RF GAIN fully clockwise. 5. Rotate OFF/VOLUME clockwise to turn on the CB. The display lights and the channel number appears. An alert sounds if a weather alert signal is detected (see “Using Digital Weather Alert” on Page 10). Ô NOTE Ô 6. To dec
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3. To turn off the CB, turn OFF/VOLUME counterclockwise to OFF until it clicks. USING COMMON 10-CODES Citizen’s Band operators have adopted 10-codes for standard questions and answers. These codes permit faster communication and better intelligibility in noisy areas. The more popular codes follow: Code Meaning 10-1 Receiving poorly. 10-2 Receiving well. 10-3 Stop transmitting. 10-4 OK, message received. 10-5 Relay message. 10-6 Busy, please stand by. 10-7 Out of service. 10-8 In service 10-9
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This table lists the code meanings in the form of a statement. They can also be phrased as questions. For example, “10-6: Are you busy?”, “10-20: What is your location?”. TIPS FOR USING YOUR CB Like most activities, CB radio has its customs and courtesies. The following tips will help you get the most enjoyment from your CB. BUSINESS USE Truck drivers and delivery personnel can learn road and traffic conditions and get assistance in locating destinations. A CB is also good company on l
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Do not hold down PTT when you are not talking. (This is called dead keying.) Assist callers with directions, information about road conditions, and any other reasonable requests. MAXIMUM RANGE Your CB radio’s transmission range is generally line-of- sight. The maximum range and quality of CB transmissions vary depending on the following conditions: the type and quality of antenna used. the height of the antenna’s mounting location — the higher the antenna, the better the signal’s ran
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LISTENING TO THE WEATHER BAND The National Oceanic and Atmospheric Administration (NOAA) broadcasts local forecast and regional weather information on one or more of seven channels in the US. We have pre-programmed your CB with all seven of these frequencies. Channel Frequency (MHz) WX1 162.400 Ô NOTE Ô WX2 162.425 PTT does not work when WX3 162.450 CB/WX is set to WX. You can WX4 162.475 only send transmissions when in CB mode. WX5 162.500 You cannot transmit while WX/ WX6 162.525
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To silence the alert tones, press ALERT TONE OFF. WX/ALERT flashes until you switch to WX mode and listen to the broadcast. Or press PTT to silence the alert tones so Ô NOTE Ô WX/ALERT stops flashing. Ô You cannot transmit while WX/ALERT flashes in CB mode. To reduce the alert tone levels for subsequent alerts, hold down ALERT TONE OFF for about two seconds while WX/ALERT flashes. The tone stops and WX/ALERT flashes slowly. If the radio receives a new weather alert, three low-level, sho
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TROUBLESHOOTING We do not expect you to have any problems with your CB, but if you do, the following suggestions might help. Symptom Suggestion Make sure POWER is on. Make sure SQUELCH is adjusted properly. Be sure RF GAIN is fully clockwise. Trouble receiving. Make sure the CB is set to an operating channel. Make sure the microphone is securely connected. Check for a good antenna connection. Make sure the antenna cable is securely connected to the radio. Make sure the antenna is fully exte
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FCC INFORMATION The Federal Communications Commission (FCC) does not require you to have a license to operate this CB. However, the FCC does require that you read and know Part 95 of FCC Rules. These rules apply to the operation of a Class D CB. Warning: Do not open your CB to make any internal adjustments. Any internal adjustments can be made only by an authorized service technician. Unauthorized internal adjustments and/or modifications can lead to illegal operation as defined by Part
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SPECIFICATIONS RECEIVER Frequency Response (1 kHz, 0 dB Reference) Lower, at 450 Hz ................................................................... –3 dB Upper, at 2500 Hz ................................................................. –3 dB Intermediate Frequency First IF ......................................................................... 10.695 MHz Second IF .......................................................................... 455 kHz Maximum Sensitivity ......................
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Internal Speaker ................................................... 16 Ohm, 5 Watts 9 9 5 Dimensions (HWD) ................................. 1 / x 5 / x 7 / inches 16 16 16 (40 mm x 142 mm x 185 mm) Weight ......................................................................... 2 lbs (930 g) Specifications are typical; individual units might vary. Specifications are subject to change and improvement without notice. ACCESSORIES Depending on how and where you plan to use your CB radio, the foll
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Limited Ninety-Day Warranty This product is warranted by RadioShack against manufacturing defects in material and workman- ship under normal use for ninety (90) days from the date of purchase from RadioShack company- owned stores and authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE DURATION OF THE WRITT
